CN106456141A - Junction structure and biopsy needle - Google Patents
Junction structure and biopsy needle Download PDFInfo
- Publication number
- CN106456141A CN106456141A CN201580027094.4A CN201580027094A CN106456141A CN 106456141 A CN106456141 A CN 106456141A CN 201580027094 A CN201580027094 A CN 201580027094A CN 106456141 A CN106456141 A CN 106456141A
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- Prior art keywords
- pipe
- alloy
- connecting member
- metal
- needle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/04—Endoscopic instruments, e.g. catheter-type instruments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
- B23K1/18—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams circumferential seams, e.g. of shells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/04—Endoscopic instruments, e.g. catheter-type instruments
- A61B2010/045—Needles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/24—Ferrous alloys and titanium or alloys thereof
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Endoscopes (AREA)
- Surgical Instruments (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Provided is a junction structure or the like with which it possible to firmly join together tubes formed of mutually different metals or alloys. A junction structure is equipped with a needle tube (63) made of a first metal or alloy, a needle (62) made of a second metal or alloy different from the first metal or alloy, a coupling member (66) forming a cylinder inside which a passage (66a) into which the needle tube (63) and the needle (62) can be inserted is provided, the coupling member (66) being provided on a side surface with a through hole (66b) penetrating from the outer portion of the coupling member (66) to the passage (66a), and a brazing material (67) injected from the through hole (66b) in a state in which the end surfaces of the needle tube (63) and the needle (62) are in contact in the passage (66a) for joining the coupling member (66) to the needle tube (63) and the needle (62); the second metal or alloy is more readily oxidized than the first metal or alloy during soldering using the brazing material (67), and the contact position of the needle tube (63) and the needle (62) is located on the needle (62)-side from the through hole (66b) along the direction in which the needle tube (63) and the needle (62) extend.
Description
Technical field
The present invention relates to the joint construction being engaged each other by the pipe that diverse metal or alloy is constituted and answering
Biopsy needle with this joint construction.
Background technology
As the treatment apparatus for extracting intravital cell and tissue, it is known to biopsy needle.Biopsy needle is formed as tool
There is the tubular of hollow space, by puncturing in vivo to extract cell and tissue leading section.And, also it is known to work
It is used as the biopsy needle for the treatment of apparatus in the endoscopic system observed in the tube chamber of body.Such biopsy needle is via in being arranged at
The treatment apparatus passage of the insertion section of sight glass and be inserted in tube chamber, extract the cell of wall and tissue.
Biopsy needle used in endoscopic system is in roughly linear, and this biopsy needle has：Pin in a tubular form, its shape
Become leading section and can puncture live body；Needle tubing, it extends from this pin；And tubular part, it supplies pin and needle tubing movably
Run through insertion.Wherein, pin and needle tubing were formed by stainless steel (SUS) etc. in the past.
On the other hand, in recent years, the biopsy needle also being formed by NiTi (NiTi) alloy using pin.Nitinol has and is claimed
Make the very high spring function of superlastic sexual function, neatly deformed according to external force, and in not this external force, several
Recover completely.Therefore, by forming pin by Nitinol, pin is made also can to enter easily relative to the path of complicated bend
Move back.
In the case of pin and needle tubing will being formed by different materials, it is known to following technology：For example both are inserted in
The connecting member of the sleeve-shaped being made up of stainless steel (SUS) and make front end face against each other, by brazing material or use bonding
Pin, needle tubing and connecting member are engaged (referring for example to patent document 1) by agent.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Application Publication 2008-523909 publication
Content of the invention
Invention problem to be solved
However, because Nitinol is the alloy being easier to aoxidize, therefore when wanting to the pin being made up of Nitinol
When carrying out soldering, the surface of this pin easily aoxidizes because of heating.Thus, due to reducing the wetability of brazing material, therefore to
Want that so that such pin is securely engaged with needle tubing and connecting member by brazing material is extremely difficult.
And, in the case of using bonding agent, because bond strength is lower than soldering, therefore bonding agent can be because of biopsy needle
Bending stress when being curved and peel off, consequently, it is possible to producing gap between needle tubing and needle tubing and being unable to maintain that airtight
Property.
The present invention is exactly to complete in view of the foregoing, its object is to provide can make by metal different from each other or
The joint construction of pipe joint firmly with each other and work pin being engaged with needle tubing using such joint construction that alloy is formed
Inspection pin.
Means for solving the problems
In order to solve above-mentioned problem reached purpose, the joint construction of the present invention is characterised by having：First pipe, its by
First metal or alloy is constituted；Second pipe, it is made up of the second metal or alloy different from described first metal or alloy；It is in
The connecting member of tubular, it is internally provided with running through the passage of insertion for described first pipe and described second pipe, in side
Face is provided with the opening penetrating into described passage from the outside of this connecting member；And brazing material, when institute in described passage
State first pipe and described second pipe end face against each other in the state of, this brazing material injects from described opening, to described
One pipe, described second pipe and described connecting member carry out soldering, and described second metal or alloy is carrying out employing described soldering
Easier than described first metal or alloy during the soldering of material aoxidize, the abutted position of described first pipe and described second pipe along
The direction of described first pipe and the extension of described second pipe is located at the position leaning on described second tube side than described opening.
It is characterised in that described first pipe and described second pipe are in tubular described link in above-mentioned joint construction
The central part of the short transverse of part abuts.
It is characterised in that vertical with the short transverse of tubular described connecting member in above-mentioned joint construction
Multiple described openings are provided with the circumference of the same face.
It is characterised in that the rounded shape in the openend of described opening, elliptical shape, long hole shape in above-mentioned joint construction
Shape or polygon-shaped.
It is characterised in that described opening is by cutting away one of the side of described connecting member in above-mentioned joint construction
Divide and formed.
It is characterised in that described second metal or alloy is made up of superelastic alloy in above-mentioned joint construction.
It is characterised in that described first metal or alloy is stainless steel in above-mentioned joint construction, described second metal or
Alloy is Nitinol.
The biopsy needle of the present invention has described joint construction, and this biopsy needle is characterised by, the leading section of described second pipe
In needle-like.
Invention effect
According to the present invention, make the direction that first pipe and second pipe extend along this first pipe and second pipe than the company of being arranged at
The opening of knot part lean on the second tube side position abut, even if therefore from opening injection melt brazing material when it is also possible to
The oxidation of the second pipe that suppression leads to because of heating, makes first pipe and second pipe and connecting member firm by brazing material
Ground engages.Therefore, even if it is also possible to maintain two in the case that the junction surface to first pipe and second pipe is applied with bending stress
Bond strength between person simultaneously guarantees air-tightness.
Brief description
Fig. 1 is the figure of the Sketch of the endoscopic system illustrating embodiments of the present invention.
Fig. 2 is to the schematic diagram illustrating as the Sketch of the biopsy needle of for the treatment of apparatus shown in Fig. 1.
Fig. 3 is the partial sectional view illustrating near the leading section of the biopsy needle shown in Fig. 2.
Fig. 4 is the sectional view of the joint construction illustrating embodiments of the present invention.
Fig. 5 is the stereogram of the outward appearance illustrating the connecting member shown in Fig. 4.
Fig. 6 is the sectional view of the joint method for embodiments of the present invention are described.
Fig. 7 is the ginseng of the reasons why abutted position of pin and needle tubing is configured at the position leaning on pin side than through hole for explanation
Examine figure.
Fig. 8 is the stereogram of the outward appearance of the connecting member in the variation 1 illustrate embodiments of the present invention.
Fig. 9 is the stereogram of the outward appearance of the connecting member in the variation 1 illustrate embodiments of the present invention.
Figure 10 is the stereogram of the outward appearance of the connecting member in the variation 2 illustrate embodiments of the present invention.
Figure 11 is the stereogram of the outward appearance of the connecting member in the variation 3 illustrate embodiments of the present invention.
Specific embodiment
Below, referring to the drawings the joint construction of embodiments of the present invention and biopsy needle are illustrated.In addition, the present invention
Do not limited by these embodiments.In following embodiment, as in the intraluminal image to subjects such as patients
One of the treatment apparatus used in therapeutic medical endoscopic system being shot and being shown, has enumerated biopsy needle and has carried out
Illustrate, but the present invention is not limited by this embodiment.And, in the record of accompanying drawing, mark same label to a part.
Should be noted that accompanying drawing is schematic, the thickness of each part and the relation of width, the ratio of each part etc. are different with reality.Even if
In accompanying drawing each other, also include the size each other part different with ratio.
(embodiment)
Fig. 1 is the figure of the Sketch of endoscopic system 1 illustrating embodiments of the present invention.As shown in figure 1, endoscope
System 1 has：Endoscope 2, it generates by leading section is inserted into carrying out in vivo to subject in the tube chamber of subject
Image obtained by shooting；Control device 3, it implements the image procossing of regulation to the image that endoscope 2 generates, and to endoscope
The action of system 1 entirety is uniformly controlled；Light supply apparatus 4, it produces the illumination light projecting from the front end of endoscope 2；Display
Device 5, its display control unit 3 implements the in-vivo image after image procossing；And the biopsy of as treatment apparatus
Pin 6, it is provided with the functional part with front end actuator in front end, runs through and is inserted in endoscope 2 and before leading section 24
End is exposed.
Endoscope 2 has：The insertion section 21 of shape elongated in shape, it has flexibility；Operating portion 22, its base with insertion section 21
Side connects, and accepts the input of various operation signals；And universal cable 23, it extends to insertion section 21 from operating portion 22
The different direction in direction extends, and is built-in with the various cables being connected with control device 3 and light supply apparatus 4.
Insertion section 21 has：Leading section 24, it is built-in with imaging apparatus；Bending bend 25 freely, it is by multiple curved
Knee-piece is constituted；And the flexible needle tubing 26 of strip, it is connected with the base end side of bend 25, has flexibility.
Imaging apparatus accepts from outside light and opto-electronic conversion becomes electric signal to implement the signal transacting specifying.Shooting unit
Part is for example using CCD (Charge Coupled Device：Charge-coupled image sensor) imageing sensor or CMOS
(Complementary Metal Oxide Semiconductor：Complementary metal oxide semiconductors (CMOS)) imageing sensor is in fact
Existing.
Be connected with set cable between operating portion 22 and leading section 24, wherein, this set cable be by with control device 3
Between enter the many holding wire harnesses of transmission/reception of horizontal electrical signal.Many holding wires include imaging apparatus is defeated
The signal of video signal going out is transferred to the holding wire of control device 3 and the control signal exporting control device 3 is transferred to imaging apparatus
Holding wire etc..
Operating portion 22 has：Crooked knob 221, it makes bend 25 vertically bend with left and right directions；Disposer
Tool insertion section 222, it also supplies live body pliers, laser knife and checks the insertion of the treatment apparatus such as probe in addition to biopsy needle 6；With
And the multiple switch 223 as operation inputting part, they in addition to control device 3, light supply apparatus 4, also input supply gas unit,
Send water unit, send the operation instruction signal of the peripheral equipments such as air element.
Universal cable 23 is at least built-in with photoconduction and set cable.And, universal cable 23 be connected with operating portion 22
The different end of side in side on be provided with：Connector portion 27, it loads and unloads freely with respect to light supply apparatus 4；And be electrically connected
Meet device portion 28, it is electrically connected with connector portion 27 via the coil cable 270 in coiled type, and fills with respect to control device 3
Unload freely.
Control device 3 generates display device 5 in-vivo image to be shown according to the picture signal exporting from leading section 24.
Control device 3 for example carries out white balance (WB) adjustment process, Gain tuning process, γ correction process, D/A conversion process to pass
Formula exception processes etc..
Light supply apparatus 4 for example has light source, rotation filter and light source control portion.Light source uses White LED (Light
Emitting Diode：Light emitting diode) or xenon lamp etc. constitute, the control according to light source control portion and produce white light.Light
Light produced by source irradiates from the front end of leading section 24 via photoconduction.
Display device 5 has following function：The body being generated via image cable receiving control device 3 from control device 3
Interior image is simultaneously shown.Display device 5 is for example using liquid crystal or organic EL (Electro Luminescence：Electroluminescent)
Constitute.
Fig. 2 is the schematic diagram that the Sketch to the biopsy needle 6 shown in Fig. 1 illustrates.And, Fig. 3 is to illustrate biopsy
Partial sectional view near the leading section of pin 6.Only incorporating section 64 is illustrated with section in figure 3.
Biopsy needle 6 has：Hold part 61, it has in generally cylindrical base portion 61a and the end being arranged at base portion 61a
The handle part 61b in portion, this handle part 61b is formed with the opening of insertion on the direction vertical with the length direction of base portion 61a；Make
Pin (second pipe) 62 for function part, its front end is formed as needle-like；Needle tubing (first pipe) 63 in a tubular form, it links holding part
61 with pin 62, and bend freely；In the incorporating section 64 of substantially tubular, it receives base portion 61a and needle tubing 63 for retreating
Freely；And the flexible needle tubing 65 of tubulose, it is arranged at the end of the different side in the side from storage base portion 61a of incorporating section 64
Portion, has flexibility.Flexible needle tubing 65 runs through and is inserted with pin 62 and the needle tubing 63 that end face is engaged each other.In endoscope 2,
It is to insert from treatment apparatus insertion section 222 that this flexible needle tubing 65 arranges, and the front end of this flexible needle tubing 65 can be from leading section
24 expose.
Pin 62 is formed using the tubular part that the superelastic alloy representated by NiTi (NiTi) alloy is constituted.Pin 62
The size of each several part is not particularly limited, as one, external diameter is 0.5～1.3mm, and internal diameter is 0.3～1.2mm.
And, the leading section 62a of pin 62 is formed as puncturing into the needle-like of biological tissue.Such pin 62 is set to according to handle part
Part 61 can be exposed to outside from the front end of flexible needle tubing 65 with respect to the reciprocating motion of incorporating section 64.
Needle tubing 63 is made up of stainless steels such as SUS, and the external diameter using external diameter and internal diameter and pin 62 and internal diameter identical tubulose
Part is forming.As shown in figure 3, needle tubing 63 is passed through for example using the connecting member 66 of the sleeve-shaped being made up of stainless steels such as SUS
Soldering representated by soft soldering to engage with the end of pin 62.
Incorporating section 64 is formed with the hollow space of the shape that is stepped.Have can for side at one end for the hollow space of incorporating section 64
Run through the diameter of insertion for base portion 61a, there is in another side the diameter that can run through insertion for pin 62 and needle tubing 63.
Fig. 4 is the sectional view of the joint construction illustrating present embodiment, illustrate to engage using connecting member 66 pin 62 with
The state of needle tubing 63.And, Fig. 5 is the stereogram of the outward appearance illustrating connecting member 66.
Connecting member 66 is formed as tubular, and this tubular is internally provided with running through the logical of insertion for pin 62 and needle tubing 63
Road 66a.As long as the external diameter of connecting member 66 enables this connecting member 66 to run through and being inserted into the inside of flexible needle tubing 65 and then not having
It is particularly limited to.And, the internal diameter of connecting member 66 is set to the outer of the inner peripheral surface of connecting member 66 and pin 62 and needle tubing 63
The gap of side face for example, 0.02～0.2mm about.
It is provided with the opening penetrating into passage 66a from the outside of connecting member 66 in the side of connecting member 66.Below, will
This opening is referred to as through hole 66b.In the present embodiment, through hole 66b is arranged at the height deviateing tubular connecting member 66
The position at the center of degree direction (i.e. central shaft R direction).Preferably so that the center C of through hole 66b is from the height of connecting member 66
The centrally directed one end in direction and the 1/4 about of length L of connecting member 66 mode of deviateing are configured.
As described later, then do not have as long as the diameter of through hole 66b can make the brazing material of thawing be injected in passage 66a
It is particularly limited to.
Pin 62 and needle tubing 63 pass through such as soft soldering with the state that end face each other abuts in the passage 66a of connecting member 66
Material etc. brazing material 67 and engage with connecting member 66.In the present embodiment, pin 62 and needle tubing 63 are in connecting member 66
The substantial middle in heart axle R direction abuts.Therefore, the position of pin 62 and the abutted position of needle tubing 63, i.e. bearing surface 63a is along pin 62
With needle tubing 63 extend direction and be located at than the through hole 66b being arranged on connecting member 66 lean on pin 62 side position.Thus, pass through
Through hole 66b is opposed with the outer peripheral face of needle tubing 63.
The state that brazing material 67 is melted with heating is injected in passage 66a from through hole 66b, is filled in passage 66a
With through hole 66b, pin 62, needle tubing 63 and connecting member 66 are engaged.And, the two ends in connecting member 66, pass through
The brazing material 67 that wetting extends and reaches the two ends of connecting member 66 in passage 66a forms leg 67a.In addition, soldering material
As long as pin 62, needle tubing 63 and connecting member 66 can be engaged with each other and be not particularly limited by the species of material 67.As one,
In the case that the pin 62 being made up of Nitinol, the needle tubing 63 being made up of stainless steel and connecting member 66 are engaged,
Sn-Ag-Cu slicken solder, Sn-Ag slicken solder etc. can be used.
Next, illustrating to the joint method of present embodiment.Fig. 6 is the joint side for present embodiment is described
The sectional view of method.
First, as shown in fig. 6, pin 62 and needle tubing 63 are inserted in the passage 66a of connecting member 66, both end faces are made
Against each other.Now, adjust abutted position, so that needle tubing 63 is configured at the side residing for through hole 66b, pin 62 and needle tubing 63 exist
The position leaning on pin 62 side than through hole 66b abuts.In the present embodiment, because through hole 66b is from the center of connecting member 66
It is partial to a side, as long as therefore bearing surface 63a to be configured at the substantial middle of connecting member 66.
Then, brazing material 67 is heated and so that it is melted, and this brazing material 67 is logical from through hole 66b injection
In road 66a, it is filled in the gap of pin 62 and needle tubing 63 and connecting member 66.At this point it is possible to suitably supply scaling powder.And,
The two ends of connecting member 66 are formed with leg 67a (with reference to Fig. 4), as long as confirming that brazing material 67 has cured, just terminate to connect
Close.
Next, to making pin 62 and needle tubing 63 lean in the through hole 66b than injection brazing material 67 in the present embodiment
The reasons why position of pin 62 side abuts illustrates.Fig. 7 be for illustrate this reason with reference to figure.
As shown in fig. 7, working as in the range of the through hole 90a opening of the side being arranged at connecting member 90 to pin 62 and pin
In the case that pipe 63 carries out soldering, when making brazing material 67 melt and to inject from through hole 90a, pin 62 is also heated.Here,
Due to formed pin 62 Nitinol be easier aoxidize alloy, therefore the surface of pin 62 can because of the heating during soldering quilt
Oxidation.As a result, reducing the wetability of brazing material 67, enough connecing cannot be obtained between brazing material 67 and pin 62
Right.
On the other hand, in the present embodiment, as shown in figure 4, being configured with by stainless in the range of through hole 66b opening
The needle tubing 63 that steel is constituted.Therefore, when making brazing material 67 melt and to inject from through hole 66b, because pin 62 is not easy to be added
Heat, therefore, it is possible to suppress the oxidation of pin 62.Thus, it is ensured that the excellent wetability on brazing material 67 surface of pin 62 relatively,
So as to be securely engaged pin 62 and brazing material 67.On the other hand, because stainless steel is the dysoxidizable alloy of comparison, therefore
Even if needle tubing 63 is heated when from through hole 66b injection brazing material 67, also it is not result in the surface oxidation of needle tubing 63, can
Fully guarantee the conjugation grade of needle tubing 63 and brazing material 67.
And, in the case of bending in the needle tubing 63 when using and packing carrying out biopsy needle 6, sometimes to pin 62 and needle tubing
63 bearing surface 63a applies bending stress.In this case, as shown in fig. 7, working as the bearing surface 63a of pin 62 and needle tubing 63
When in the range of through hole 90a opening, stress collection can be produced in the point of intersection of bearing surface 63a and the interface of brazing material 67
In.As a result, the fracture of brazing material 67 is created it is possible to reduce between pin 62 and needle tubing 63 for starting point with this intersection point
Air-tightness.
On the other hand, as shown in figure 4, in the case that the bearing surface 63a of pin 62 and needle tubing 63 deviates through hole 66b, energy
Enough avoid the stress concentration of bearing surface 63a and the point of intersection at interface of brazing material 67.As a result, pin can stably be guaranteed
62 with the bond strength of needle tubing 63, thus maintaining air-tightness between the two.
As described above, according to present embodiment, pin 62 and needle tubing 63 can be securely engaged, and can be steady
Surely maintain the bond strength of pin 62 and needle tubing 63.It is accordingly possible to ensure the air-tightness between pin 62 and needle tubing 63, keep biopsy
The quality of pin 6.
(variation 1)
Next, illustrating to the variation 1 of embodiments of the present invention.Fig. 8 and Fig. 9 is to illustrate in this variation 1
The outward appearance of connecting member stereogram.For opening the through hole in the passage of the brazing material injection connecting member of thawing
Mouth end can also adopt variously-shaped in addition to toroidal.For example, it is possible to connecting member 71 as shown in Figure 8 is like that, insertion
The openend of hole 71a adopts long hole shape it is also possible to as connecting member 72 as shown in Figure 9, the openend of through hole 72a
Using rectangular shape.Additionally, the openend of through hole can also be polygon-shaped using elliptical shape or hexagon etc..For example, when
In pin 62 and needle tubing 63 gap with connecting member brazing material roundabout bad in the case of, be formed as by making openend
Such elongated hole or rectangular shape, can be suitably filled with brazing material.
(variation 2)
Next, illustrating to the variation 2 of embodiments of the present invention.Figure 10 is the company illustrating in this variation 2
The stereogram of the outward appearance of knot part.Can arrange on connecting member and multiple the brazing material of thawing be injected this connecting member
Through hole in passage.Such as Figure 10 shows vertical in the short transverse (central axis direction) with tubular connecting member 73
The through hole 73a of the rounded shape in provided circumferentially about multiple openends of the same face example.
Here, in the case of being provided only with a through hole, exist inject this through hole brazing material be difficult to roundabout
Situation to pin 62 and the back side of needle tubing 63 (with reference to Fig. 4).Therefore, by the multiple through hole 73a of setting and from each through hole
73a inject brazing material, can make brazing material in the circumference of pin 62 and the outer peripheral face of needle tubing 63 fully roundabout such that it is able to
Obtain stable joint quality.
(variation 3)
Next, illustrating to the variation 3 of embodiments of the present invention.Figure 11 is the company illustrating in this variation 3
The stereogram of the outward appearance of knot part.As shown in figure 11, inject the opening in connecting member 74 as the brazing material that will melt,
Can replace through hole (the through hole 66b for example shown in Fig. 5) that notch 74a is set.Notch 74a passes through to cut away by stainless
A part for the side of the cartridge of the compositions such as steel and formed.
In this case, by the A/F of the short transverse (central axis direction) of tubular connecting member 74
Maintain into and through hole 66b equal extent, expand the A/F of the circumference of connecting member 74, opening surface can be increased
Long-pending.Thereby, it is possible to easily inject brazing material into connecting member 74, and brazing material can be made to be inserted in this linking part
Fully roundabout on the outer peripheral face of the pin 62 of part 74 and needle tubing 63.Therefore, in the state of the heating of pin 62 is suppressed, one can be entered
Step reduce brazing material injection number of times or shorten injection length, therefore, it is possible to by brazing material more reliably engage pin 62,
Needle tubing 63 and connecting member 74.
In addition, in fig. 11, the end rectangular shaped of notch 74a, but the shape of end is not particularly limited, for example
It can also be the shape bending to circular arc.
In embodiments described above and variation 1～3, to engage the pin 62 being made up of Nitinol with by not
The situation of the needle tubing 63 that rust steel is constituted is illustrated, but as long as being for the metal or alloy of an engaged side,
The combination aoxidizing the different material of easness of the metal or alloy of the opposing party just can apply the present invention.
Present invention mentioned above is not limited to embodiment and variation 1～3, can be carried out respectively according to specification etc.
Plant deformation.For example, it is also possible to remove several structures all inscapes shown in from above-mentioned embodiment and variation 1～3
Key element is become to form invention.Knowable to above-mentioned record, within the scope of the invention, can also there are other various embodiments.
Label declaration
1：Endoscopic system；2：Endoscope；3：Control device；4：Light supply apparatus；5：Display device；6：Biopsy needle；21：Insert
Enter portion；22：Operating portion；23：Universal cable；24、62a：Leading section；25：Bend；26、65：Flexible needle tubing；27：Connector
Portion；28：Electric connector portion；61：Hold part；61a：Base portion；61b：Handle part；62：Pin；63：Needle tubing；63a：Bearing surface；64：
Incorporating section；66、71、72、73、74、90：Connecting member；66a：Passage；66b、71a、72a、73a、90a：Through hole；67：Soldering
Material；67a：Leg；74a：Notch；221：Crooked knob；222：Treatment apparatus insertion section；223：Switch；270：Coil cable
Line.
Claims (8)
1. a kind of joint construction is it is characterised in that this joint construction has：
First pipe, it is made up of the first metal or alloy；
Second pipe, it is made up of the second metal or alloy different from described first metal or alloy；
Tubular connecting member, it is internally provided with running through the logical of insertion for described first pipe and described second pipe
Road, is provided with the opening penetrating into described passage from the outside of this connecting member in side；And
Brazing material, in the state of the end face of first pipe and described second pipe described in described passage is against each other, this pricker
Wlding material injects from described opening, and described first pipe, described second pipe and described connecting member are carried out with soldering, described second gold medal
Belong to or alloy be easier than described first metal or alloy in the soldering carrying out employing described brazing material aoxidizes,
Described first pipe is located at along the direction of described first pipe and the extension of described second pipe with the abutted position of described second pipe
Lean on the position of described second tube side than described opening.
2. joint construction according to claim 1 it is characterised in that
The central part of the short transverse in tubular described connecting member abuts described first pipe with described second pipe.
3. joint construction according to claim 1 and 2 it is characterised in that
Multiple described openings are provided with the circumference of the same face vertical with the short transverse of tubular described connecting member.
4. the joint construction according to any one in claims 1 to 3 it is characterised in that
The rounded shape in openend of described opening, elliptical shape, long hole shape or polygon-shaped.
5. joint construction according to claim 1 and 2 it is characterised in that
Described opening is formed by cutting away the part of side for described connecting member.
6. the joint construction according to any one in Claims 1 to 5 it is characterised in that
Described second metal or alloy is made up of superelastic alloy.
7. joint construction according to claim 6 it is characterised in that
Described first metal or alloy is stainless steel,
Described second metal or alloy is Nitinol.
8. a kind of biopsy needle, it has the joint construction described in any one in claim 1～7, the feature of this biopsy needle
It is,
The leading section of described second pipe is in needle-like.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-116302 | 2014-06-04 | ||
| JP2014116302A JP6302754B2 (en) | 2014-06-04 | 2014-06-04 | Joining structure and biopsy needle |
| PCT/JP2015/066062 WO2015186746A1 (en) | 2014-06-04 | 2015-06-03 | Junction structure and biopsy needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106456141A true CN106456141A (en) | 2017-02-22 |
| CN106456141B CN106456141B (en) | 2019-12-27 |
Family
ID=54766815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580027094.4A Active CN106456141B (en) | 2014-06-04 | 2015-06-03 | Engaging structure and biopsy needle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10383608B2 (en) |
| EP (1) | EP3153106A4 (en) |
| JP (1) | JP6302754B2 (en) |
| CN (1) | CN106456141B (en) |
| WO (1) | WO2015186746A1 (en) |
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| CN110602994A (en) * | 2017-04-07 | 2019-12-20 | 奥瑞斯健康公司 | Super-elastic medical instrument |
| US11723653B2 (en) | 2020-04-10 | 2023-08-15 | Ethicon, Inc. | Composite suture needles having elastically deformable sections |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3153106A1 (en) | 2017-04-12 |
| JP2015228987A (en) | 2015-12-21 |
| EP3153106A4 (en) | 2018-03-07 |
| WO2015186746A1 (en) | 2015-12-10 |
| US20170071584A1 (en) | 2017-03-16 |
| JP6302754B2 (en) | 2018-03-28 |
| CN106456141B (en) | 2019-12-27 |
| US10383608B2 (en) | 2019-08-20 |
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